Coiling head for yarn packs



Apr1l21, 1959 H. BUDDECKE COIL-ING HEAD FOR YARN PACKS FiledApril 21, 1959 fn ven for-.-

United States Patent O 2,882,673 comme HEAD ron YARN PACKS i Heinrich Buddecke, Gutersloh, Westphalia, Germany Application April 21, 1954, Serial No. 4424,683# Claims priority, application Germany April 30, 1953 12 'Claims.- (Cl. 57-1) The invention refers to a coiling head for the manufacture of yarn layers consisting of oblong helicoidal coils, formed into yarn lpacks by interposition of separating leaves. The yarn layers are made by coiling the yarn on one end of the mandrel, from'where it goes to the other end and Where it is taken off.

An already proposed device of this kind has a prismatically formed mandrel and a uniform, oblong-round section. When the yarn is Wound up on the mandrel, the latter is subject to a strongly changing pulling speed. The pulling speed is greatest When Winding up is done edgewise. In View of the tensile strength of the yarn the velocity of revolution of the mandrel is limited by the maximum pulling speed, and a relatively long period is necessary to produce a certain coil strip. Another disadvantage of the coil-head already proposed is the fact that the yarn is taken oi by a spool revolving with the coiling head so that only a limited quantity of yarn can be Worked up With an uninterrupted running of the head.

In order to avoid these disadvantages the cross-section of the mandrel, according to the invention, is round at the Winding-up end for the yarn, changes into an oblonground section at the issue-end, the length of circumference of the different sections of the mandrel remaining the same. As a result of this measure the yarn is Wound up on the round Winding-up end of the mandrel, whereby a continually and rapidly changing of the `pulling speed and breaking of the yarn are avoided. In this way the coiling speed surpasses more than ten times the speed of the hitherto existing form. The mandrel .is domeshaped at the Winding-up end and prismatic with oblonground cross-section at the issue-end, the length of the oblong-round cross-section being greater than the. diameter of the dome.

The yarn thread is brought on the mandrel by means of a xed cross spool over a yarn loop arranged axially parallel to the axis of rotation of the mandrel, and a yarn loop attached to the outer `circumference of the mandrel head and rotating around the mandrel. The result is that the thread can be taken from a considerably larger yarn bobbin and the mandrel head can be in Working order for a longer period.

The description given below is an example of the device according to the invention.

In the drawing:

Fig. 1 is a side-view of the coiling head,

Fig. 2 is a view of Fig. l taken from the left side,

Fig. 3 is a section through the coiling head along line III--III of Fig. 2,

Fig. 4 is a section along line IV-IV of Fig. 2, the mandrel not being shown in section,

Fig. 5 is a frontal view of Fig. 4, taken from the right hand side, p

Figs. 6a, 6b, and 6c are diierent views of the coiling head.

The coiling head consists of a stationary machine frame 1, wherein a Winder body 3 is revolubly supported 2,882,673 Patented Apr. 21, 1.9.59

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by means of ball bearings and is revolved by a belt 5 acting upon a belt-drive vsurface 4. The ball bearings 2 ,are tightened by packings 6 and a packing cover 7. A bearing bolt 8 is screwed into the axis of rotation of the Winder body 3; the bearing bolt projects into a concentric chamber 9 of the Winder body. Here a coiling mandrel 12 is mounted on ball bearings 11, easily revolvng.

The part of the coiling mandrel jutting out of chamber 9 is intended for Winding up the yarn thread. In the Winding up zone 13, Where it comes out of chamber 9 of the Winder body, its cross-section is circular, so that, When the thread is Wound up and comes out of loop 14 at the circumference of the Winder body 3, its speed is uniform, no acceleration of the speed arises. The insignificant mechanical stress allows the Winding speed to be quickened tenv to fteen times the speed of coiling mandrels with a non-circular Winder zone.

The coiling mandrel changes, beginning at the Winding up zone 13, from its dome-shaped form into the oblongv round section form at the free end 15, the height of the section in the perpendicular middle plane according to Fig. 2 continually diminishing, and the breadth increasing in the horizontal middle plane. The charge in breadth and height and in the extension of the diierent oblique planes must be proportioned in a Way that the length of circumference of the coiling mandrel remains the same as in the different vertical section planes, so that the Wound up thread can be easily removed forward and picked up by the prismatic part of the coiling mandrel.

Thread 16 (see Fig. 4) is taken from a stationary big cross-Wound spool 17 and arrives at the above mentioned loop 14 over a thread tensioner 19, which sets free a stopping device for the machine When the thread breaks, through a stationary loop 20, on the same axis as Winder body 3, and a broad middle opening 21 of Winder body 3, and iinally through communication canal 22.

The Winder body is driven by belt-drive 4, 5 setting the Winder-body in rotation, whereas coiling mandrel 12, being connected With Winder body 3 by means of ball bearings 11, is held against rotation relative vto machine frame 1. Loop 14, rotating around coiling mandrel 12 therefore Winds up the thread on the coiling mandrel.

A continual shifting of the wound up coils 23 towards the front part 15 of the coiling mandrel is caused by endless band-conveyers 24, guided by leader rolls 25, 26 (Fig. 3) and driving rolls 27. The band-conveyers are driven by Worm 28 lixed on bearing bolt 8. The driving Wheels 27, constructed as Worm-Wheels, gear into 'the Worm, so that when bearing bolt 8 turns with Winder body 3 the driving Wheels 27 also turn uniformly, taking the Wound up parts of the yarn thread, lying on belts 24, forward. The strain of the endless band-conveyers is controlled by rolls 29, influenced by springs, the rolls being located, the same as the other rolls 25, 26, 27, and band-conveyers 24, in a recess or slit 31 of the horizontal middle plane of coiling mandrel 12.

The yarn-strip 30 that is formed at the front end, the coils of which have in the meanwhile assumed the desired oblong-rounded shape, is supported on its lower side by an endless band-conveyer 32 When going 01T the coiling mandrel, and at the same time a separating strip 33 is introduced between the endless band-conveyers 32 and yarn strip 30, the separating strip being taken off a station-V ary roller 34. Above the yarn strip a second endless band-conveyor 35 is provided for; its purpose being to atten the yarn strip, so that the screw-shaped coils are laid one upon another in scale like manner. In order to facilitate the process the coiling mandrel has on its front part (see Fig. l) a bevelled end 36. A second separating strip 33 may, if desired, be introduced also between 3A band-conveyor 35 and the yarn artificial silk'yarn' 'is Wound u It would be to the purpose to have the yarn coils supported not at the full surface of theV ceiling mandrel, especially not on its arched part, but onlyen ribs or wires 37 (Figs. l and5), as hereby the sliding friction in the motion of the coils on 'the Winder mandrel is considerably diminished. The ribs or wires can also be formed as parts 'of endless bandconveyers like band-conveyers 24, in. order to transport safely forward the yarn coils.

` Instead of ahorizontal disposition of the axis of the ceiling mandrel the latter can be disposed, as shown in Figsha, ;6b,`6c,' in a perpendicular downwards or upstrip 30, for instance when wwe be coiled about the ceiling mandrel, said ceiling mandrel beingrevolublymeunted on the Winder bodyat one of Wards' oriobli'que' position.' Ceiling mandrel 12 is held against turning with regard to machine frame 1 by the band-conveyers 32v and 35, Whereas the Winder body 3 revolves with.' regard Yto machine frame 1. Keeping the l ceiling mandrel 12 in a certain turning position in cases -Where the band-conveyers 32 and 35 cannotbe used, can

lbe done by magnets 38 (Fig. 3), placed 'in the broad axial plane of the ceiling mandrel, equipped with soft ironr pieces vacting as armatures.

I claim:

lcross section at the issue end, a Winder body' for Winding the yarn-thread in coils, endless conveying belts running in a recess in the mandrel and shifting the wound coils towards the issue end, the outer'part of the belts following the shape of the mandrel, means for taking the coils off the'issue end, and means for pressing at the issued coils.

A2. In a ceiling head according to claim l, the c oilmg mandrel having ribs adapted to guide the wound colls for being shifted.`

3. In a ceiling-head according te claim l, said endless .band-conveyers being mounted on rollers within said re- CSSS". Y

4. In Ya ceiling head according to claim l, rollers within said recess supporting said endless band-conveyers, and idler pulleys cooperating with said belt conveyors inside said recess, and being movable and spring actuated v towards the belt conveyors, whereby the belts will be kept under tension.

5. In a ceiling head according to clalm l, a machine frame, a stationary yarn spool, said Winder body being rotatably mounted in the machine frame lhavlng a yarn guide near its circumference leading the yarn-thread aboutthe ceiling mandrel, a stationary yarn spool, said Winder body having a central opening communicated vwith said guide whereby the yarn-thread is guided from said stationary spool to said revolving guide.

6. In a ceiling head according to claim l, a mac l 1 ine frame, said Winder body being rotatably mounted in the machine frame and having a central opening and a yarn guide near its circumference adapted to lead the yarn to its ends., the other end being kept free for issuing the yarn-coils, and means for keeping the ceiling mandrel stationary with respect to the machine frame.

7. In a ceiling head according to claim l, a bearing bolt centrally xed tothe Winder body, ball bearings thereon reyolubly.l supporting said ceiling mandrel, said Wlnder body having a central recess in its front end surrounding saicl; bearing bolt, and the ceiling mandrel having a cylindrical end entering said recess.

8. In a-coilinghead according to claim l, a bearing bolt centrally fixed tosaid Winder body and -revolubly supporting said ceiling mandrel, a worm xed to said bearing bolt, Worm Wheels on one of the rollers for each belt cooperating with said Worm whereby upon revolving the Winder body relatively to the ceiling mandrel the beltswill-be driven; y i

f `9. Infa ceiling head according to claim l, said ceiling mandrel being revolubly mounted on the Winder body havingits issueend free, said- Winder'body having a groove in its'circumferential surface for a rope rotating the Winder body, saidcircumferential surface surrounding the path of .the yarn thread to be coiled. Y,

l0. In a ceiling head according to claim l, a stationary yarn s pooL-said Winder body being rotatably mounted and having'a yarn revolving guide near its circumference leading the yarn thread about the ceiling mandrel, and having a centralopening communicated with said guide whereby the yarn-thread is guided from said stationary yarn'spool to said revolving guide, a stationary thread guide behind said central opening, and a thread tensioner behind said stationary-thread guide.

1.1'. In a ceiling head, according to claim l, said ceiling mandrelv having a bevelled free end, a band conveyer `pressing at the issued coils against said bevelled end *References Cited in the le of this patent :UNITED STATES PATENTS 1,872,971 Kingman Aug. 23, 1932 2,463,689 Greenwood Mar. 8, 1949 2,482,655*` Cone e Sept. 20, 1949 2,551,098 A'Cone May l, 1951 2,735,250` Budd'eke Feb. 21, 

